Water heater

Abstract

The utility model provides a water heater which comprises an outer shell, a heating rod, an upper end cover and a lower end cover, a water inlet and a water outlet are arranged on the lower end cover, and the lower end cover is arranged on the end portion of the outer shell, so that the outer space occupied by the outer shell in the radial direction can be effectively reduced, and the water heater is suitable for the position needed by installation.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric water heater technical field especially relates to a water heater. BACKGROUND

[0002] The instant electric water heater has no water storage container, so its structure is small in size, light in weight, convenient to use and low in energy loss.

[0003] Chinese patent document CN202420812707.1 discloses a water heating assembly of an instant electric water heater, which comprises an electric heating component and a heating tank. The heating tank has an inner cavity with an upper end opening. The heating end of the electric heating component is inserted into the inner cavity from top to bottom. The upper end of the electric heating component is fixed to the upper end of the heating tank and is circumferentially sealed. The sidewall of the heating tank is provided with a water inlet interface and a water outlet interface which are in communication with the inner cavity. Since the water inlet interface and the water outlet interface of the above-mentioned water heater are arranged on the shell, they will occupy more external space in the radial direction of the shell, affecting the installation position. SUMMARY

[0004] Therefore, the utility model aims at providing a water heater which aims to solve the problem that the water inlet interface and the water outlet interface of the water heater in the prior art are arranged on the shell, which will occupy more external space in the radial direction of the shell, affecting the installation position.

[0005] The utility model provides a water heater, including shell, heating rod, upper end cover and lower end cover, upper end cover and lower end cover are sealed respectively and are connected in two ends of shell, be equipped with terminal on the upper end cover, the terminal extends to the inside of shell, and is connected with heating rod, be equipped with water inlet and water outlet on the lower end cover, heating rod is used for heating the water that enters the shell from water inlet, water outlet is used for the water that will be discharged after heating.

[0006] Further, the heating rod comprises an arc-shaped portion and two linear portions, one end of the arc-shaped portion is connected with one end of each of the two linear portions, and the other end of each of the two linear portions is connected with the terminal.

[0007] Further, the inside of the shell is provided with a partition plate, one end of the partition plate is connected with the lower end cover, the other end is a free end and forms a gap with the upper end cover, the partition plate divides the inside of the shell into two heating chambers, the two heating chambers are communicated through the gap, the two linear portions are respectively located in the two heating chambers, and the two ends of the arc-shaped portion pass through the partition plate and are connected with the linear portions located in the two heating chambers respectively.

[0008] Further, a plurality of helical lines are arranged on the wall surface in the heating chamber, and the helical lines are used for guiding the water flowing through the heating chamber.

[0009] Further, a temperature controller is arranged on the upper end cover, and the temperature controller is electrically connected with the heating rod, and the temperature controller is used for controlling the heating amount of the heating rod.

[0010] Further, a cap is arranged on the end cover of the shell, and the cap is used for sealing the upper end cover.

[0011] Further, a support is connected with the lower end cover, and the support is used for mounting the shell.

[0012] Beneficial effects: the water heater comprises a shell, a heating rod, an upper end cover and a lower end cover, the water inlet and the water outlet are arranged on the lower end cover, and the lower end cover is arranged on the end portion of the shell, so that the external space occupied by the shell in the radial direction can be effectively reduced, and the required installation position can be adapted. BRIEF DESCRIPTION OF DRAWINGS

[0013] Fig. 1 Fig. 1 is a structural schematic view of the water heater of the utility model;

[0014] Fig. 2 Fig. 2 is an exploded view of the water heater of the utility model;

[0015] Fig. 3 Fig. 3 is a sectional view of the water heater of the utility model.

[0016] In the drawing: 1, shell; 11, partition plate; 12, gap; 13, heating chamber; 2, heating rod; 21, arc-shaped portion; 22, linear portion; 23, helical line; 3, upper end cover; 31, terminal; 32, temperature controller; 4, lower end cover; 41, water inlet; 42, water outlet; 5, cap; 6, support. DETAILED DESCRIPTION

[0017] The technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor fall within the protection scope of the utility model.

[0018] Please refer to Figs. 1 to 3The utility model provides a water heater, including shell 1, heating rod 2, upper end cover 3 and lower end cover 4, upper end cover 3 and lower end cover 4 are sealedly connected in two ends of shell 1 respectively, be equipped with terminal 31 on upper end cover 3, terminal 31 extends to the inside of shell 1, and is connected with heating rod 2, be equipped with water inlet 41 and water outlet 42 on lower end cover 4, heating rod 2 is used for heating the water of shell 1 from water inlet 41, water outlet 42 is used for discharging the water after heating.

[0019] Specifically, the shell 1 in the application adopts stainless steel, the upper end cover 3 and the lower end cover 4 can be fixed at the two ends of the shell 1 by laser welding, which effectively prevents leakage. Since the water inlet 41 and the water outlet 42 are arranged on the lower end cover 4, and the end cover is arranged at the two ends of the shell 1, the external space occupied by the shell 1 in the radial direction can be effectively reduced, and the required installation position can be adapted.

[0020] In one possible implementation, the heating rod 2 includes an arc-shaped portion 21 and two linear portions 22, the two ends of the arc-shaped portion 21 are respectively connected to one end of the two linear portions 22, and the other end of the two linear portions 22 is connected to the terminal 31. Specifically, the heating rod 2 is in a U-shaped structure, and the two ends of the U-shaped heating rod 2 are connected to the positive and negative poles of the power supply. The heating rod 2 is made of a metal material (such as nickel-chromium alloy, iron-chromium alloy, etc.), and uses the resistance heat generated when the current passes through the heating rod 2 to heat. In the heating rod 2, the current flows from the positive pole to the negative pole, and when the current passes through the heating rod 2, it will be converted into heat due to the resistance. The power supply is connected to the two ends of the heating rod 2, and the current flows from the positive pole to the negative pole of the power supply, thereby generating heat. When the heating rod 2 is used as an electric heating element, its two ends are connected to the positive and negative poles of the power supply, and heat is generated through the current, ensuring the normal operation of the heating function.

[0021] Further, the inside of the shell 1 is provided with a partition plate 11, one end of the partition plate 11 is connected with the lower end cover 4, the other end is a free end and forms a gap 12 with the upper end cover 3, the partition plate 11 divides the inside of the shell 1 into two heating chambers 13, the two heating chambers 13 are communicated through the gap 12, the linear parts 22 are respectively located in the two heating chambers 13, and the two ends of the arc-shaped part 21 pass through the partition plate 11 and are connected with the linear parts 22 located in the two heating chambers 13 respectively. Since the water inlet 41 and the water outlet 42 are arranged on the lower end cover 4 at the same time, the positions are very close, and the electric heating rod adopts a U-shaped structure, the two ends of which are connected to the upper end cover 3 respectively, which easily causes the water flowing from the water inlet 41 to flow out from the water outlet 42 without being heated sufficiently, and the water near the upper end cover 3 is relatively high in temperature. Therefore, in the embodiment, the partition plate 11 separates the water inlet 41 and the water outlet 42, so that the water flowing from the water inlet 41 flows out from the water outlet 42 after passing through the gap 12 and the two chambers, greatly improving the heating efficiency of the heating rod 2,

[0022] In a feasible embodiment, a plurality of helical lines 23 are arranged on the wall surface in the heating chamber 13, and the helical lines 23 are used for guiding the water flowing through the heating chamber 13. In the embodiment, the helical lines 23 can cause the water flow to be disturbed on the wall surface, so that the water flow is no longer smooth, but presents a vortex or rotational flow. The disturbance can accelerate heat exchange and help to uniformly transfer heat to the water. By increasing the contact area of the water flow and the surface of the heating rod 2, the water flow can more efficiently absorb the heat transferred by the heating rod 2, thereby improving the heating efficiency. The more the water flow is disturbed, the smaller the water temperature difference near the surface of the heating pipe, and the more rapid and uniform the heat exchange.

[0023] In a feasible embodiment, the upper end cover 3 is provided with a temperature controller 32, the temperature controller 32 is electrically connected with the heating rod 2, and the temperature controller 32 is used for controlling the heat generation of the heating rod 2. Specifically, the temperature controller 32 is provided with two, one is a main temperature controller 32, and the other is a safety temperature controller 32. The main temperature controller 32 is used for controlling the working temperature of the heater, so as to keep the device in the set normal working range. The safety temperature controller 32 is used as an additional safety protection device to prevent the heater from overheating due to failure. If the main temperature controller 32 fails or the temperature is too high, the safety temperature controller 32 will automatically disconnect the power supply, avoiding the safety hazards such as device damage or fire.

[0024] In one possible implementation, the end cover of the shell 1 is provided with a cap 5 for sealing the upper end cover 3. Specifically, the cap 5 is made of silica gel, which is plastic, heat-insulating, insulating and sealing the upper end cover 3. The cap 5 is provided with a wire hole for connecting the wire with the terminal 31, and a wire protection ring is arranged between the wire and the cap 5 for protecting the wire

[0025] In one possible implementation, the lower end cover 4 is connected with a bracket 6 for mounting the shell 1. Specifically, the bracket 6 is L-shaped, one side of which is connected with the lower end cover 4, and the other side is connected with the mounting position.

[0026] It is apparent for those skilled in the art that the present application is not limited to the details of the above-described exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all aspects as illustrative and not restrictive, and the scope of the present application is defined by the appended claims rather than the above description, and it is intended to embrace all changes falling within the meaning and range of equivalents of the claims. Any reference signs in the claims should not be considered as limiting the claims involved.

[0027] The above-described embodiments are only used to illustrate the technical solutions of the present application, rather than limit them; even though the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements for some technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A water heater characterised by: The utility model provides a heating rod type water heater, including shell (1), heating rod (2), upper end cover (3) and lower end cover (4), upper end cover (3) and lower end cover (4) are sealedly connected respectively in both ends of shell (1), be equipped with terminal (31) on upper end cover (3), terminal (31) extends to the inside of shell (1) and is connected with heating rod (2), be equipped with water inlet (41) and water outlet (42) on lower end cover (4), heating rod (2) is used for heating the water that enters shell (1) from water inlet (41), and water outlet (42) is used for discharging the water after heating.

2. The water heater of claim 1, wherein: Heating rod (2) includes arc portion (21) and two linear portions (22), both ends of arc portion (21) are connected with one end of two linear portions (22) respectively, and the other end of two linear portions (22) is connected with terminal (31).

3. The water heater of claim 2, wherein: The inside of shell (1) is equipped with baffle (11), one end of baffle (11) is connected with lower end cover (4), and the other end is free end and forms gap (12) with upper end cover (3), baffle (11) divides the inside of shell (1) into two heating chambers (13), two heating chambers (13) are communicated through gap (12), two linear portions (22) are located in two heating chambers (13) respectively, and both ends of arc portion (21) pass through baffle (11) and are connected with linear portion (22) located in two heating chambers (13) respectively.

4. The water heater of claim 3, wherein: The wall surface in heating chamber (13) is equipped with several spaced spiral lines (23), and spiral line (23) is used for guiding the water flowing through heating chamber (13).

5. The water heater of claim 1, wherein: Upper end cover (3) is equipped with temperature controller (32), temperature controller (32) is electrically connected with heating rod (2), and temperature controller (32) is used for controlling the heat output of heating rod (2).

6. The water heater of claim 1, wherein: The end cover of shell (1) is equipped with cap (5), and cap (5) is used for sealing upper end cover (3).

7. The water heater of claim 1, wherein: Lower end cover (4) is connected with support (6), and support (6) is used for installing shell (1).

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